Title :
Generalized APP detection of continuous phase modulation over unknown ISI channels
Author :
Hansson, Anders ; Aulin, Tor
Author_Institution :
Discrete Simulation Sci., Los Alamos Nat. Lab., NM, USA
Abstract :
Techniques for computing soft information in the presence of unknown intersymbol interference are presented, with a particular focus on iterative detection of serially concatenated continuous phase modulation. The techniques are centered around the recursive least-squares algorithm, thus enabling unsupervised detection. In particular, we employ bidirectional estimation.
Keywords :
channel estimation; continuous phase modulation; intersymbol interference; iterative methods; least squares approximations; maximum likelihood detection; a posteriori probability; bidirectional estimation; iterative detection; recursive least-squares algorithm; serially concatenated continuous phase modulation; unknown ISI channels; unknown intersymbol interference; unsupervised detection; AWGN; Additive white noise; Concatenated codes; Continuous phase modulation; Gaussian noise; Intersymbol interference; Iterative algorithms; Maximum likelihood estimation; Phase detection; Sampling methods; Channel estimation; continuous phase modulation (CPM); intersymbol interference (ISI); iterative decoding; maximum a posteriori (MAP) detection;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2005.857164
